Retrieve MCU Chip Microchip PIC18F4450 USB Microcontrollers

We can UNLOCK Microcontroller PIC18F4450, please view the IC features below for your reference:

Universal Serial Bus Features

Peripheral Highlights:

· USB V2.0 Compliant

· Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s)

· Supports Control, Interrupt, Isochronous and Bulk Transfers

· Supports up to 32 Endpoints (16 bidirectional)

· 1-Kbyte Dual Access RAM for USB

· On-Chip USB Transceiver with On-Chip Voltage Regulator

· Interface for Off-Chip USB Transceiver

· Streaming Parallel Port (SPP) for USB streaming transfers (40/44-pin devices only)

Power-Managed Modes:


High-Current Sink/Source: 25 mA/25 mA

Three External Interrupts

Four Timer modules (Timer0 to Timer3)

Up to 2 Capture/Compare/PWM (CCP) modules:

– Capture is 16-bit, max. resolution 5.2 ns (TCY/16)

– Compare is 16-bit, max. resolution 83.3 ns (TCY)

– PWM output: PWM resolution is 1 to 10-bit

Enhanced Capture/Compare/PWM (ECCP) module:

– Multiple output modes

– Selectable polarity

– Programmable dead time

– Auto-shutdown and auto-restart

Enhanced USART module:

Idle: CPU off, peripherals on

Sleep: CPU off, peripherals off

Idle mode currents down to 5.8 ìA typical

Sleep mode currents down to 0.1 ìA typical

Timer1 Oscillator: 1.1 ìA typical, 32 kHz, 2V

Watchdog Timer: 2.1 ìA typical

Master Synchronous Serial Port (MSSP) module

supporting 3-wire SPI (all 4 modes) and I2C™

Master and Slave modes

10-bit, up to 13-channel Analog-to-Digital Converter

module (A/D) with Programmable Acquisition Time

Dual Analog Comparators with Input Multiplexing


Two-Speed Oscillator Start-up


Special Microcontroller Features:

Flexible Oscillator Structure:

· Four Crystal modes, including High Precision PLL for USB

· Two External Clock modes, up to 48 MHz

· Internal Oscillator Block:

– 8 user-selectable frequencies, from 31 kHz to 8 MHz

– User-tunable to compensate for frequency drift

· Secondary Oscillator using Timer1 @ 32 kHz

· Dual Oscillator options allow microcontroller and

USB module to run at different clock speeds

· Fail-Safe Clock Monitor:

– Allows for safe shutdown if any clock stops


· C Compiler Optimized Architecture with optional Extended Instruction Set

· 100,000 Erase/Write Cycle Enhanced Flash Program Memory typical

· 1,000,000 Erase/Write Cycle Data EEPROM Memory typical

· Flash/Data EEPROM Retention: > 40 years

· Self-Programmable under Software Control

· Priority Levels for Interrupts

· 8 x 8 Single-Cycle Hardware Multiplier

· Extended Watchdog Timer (WDT):

– Programmable period from 41 ms to 131s

· Programmable Code Protection

· Single-Supply 5V In-Circuit Serial

Programming™ (ICSP™) via two pins

· In-Circuit Debug (ICD) via two pins

· Optional dedicated ICD/ICSP port (44-pin devices only)

· Wide Operating Voltage Range (2.0V to 5.5V)

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